Ford Mustang (1999-2004) Service Manual: Transmission Description (Description and Operation)
The 4R70W has the following features:
- Wide ratio gears
- Four speeds
- Rear wheel drive
- Automatic
- Electronic shift
- Torque converter clutch control
- Line pressure controls
The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.
4R70W Automatic Transmission

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Shift Patterns
Upshifts
Transmission upshifting is controlled by the powertrain control
module (PCM). The PCM receives
inputs from various engine or vehicle sensors and driver demands to
control shift scheduling, shift feel
and torque converter clutch (TCC) opera ...
Transmission (Disassembly)
Special Tool(s)
Holding Fixture, Transmission
307-003 (T57L-500-B)
Puller, Bearing
205-D064 (D84L-1123-A)
2 or 3 Jaw Puller
205-D027 (D80L-1013-A)
Remover, Mainshaft Bearing
308-058 (T77J-7025-H)
...
Torque Converter (Disassembly and Assembly of Subassemblies)
1. A new or remanufactured torque converter must be installed if one or more
of the following
statements is true:
A torque converter malfunction has been determined based on complete
diagnostic
procedures.
Converter stud or studs, impeller hub or bushin ...
